2056001171621 has 8 divisors (see below), whose sum is σ = 2122179676800. Its totient is φ = 1990381135248.

The previous prime is 2056001171597. The next prime is 2056001171633. The reversal of 2056001171621 is 1261711006502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2056001171621 - 2⁶ = 2056001171557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056001171321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139609721 + ... + 139624446.

It is an arithmetic number, because the mean of its divisors is an integer number (265272459600).

Almost surely, 2^{2056001171621} is an apocalyptic number.

It is an amenable number.

2056001171621 is a deficient number, since it is larger than the sum of its proper divisors (66178505179).

2056001171621 is a wasteful number, since it uses less digits than its factorization.

2056001171621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279234403.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 2056001171621 in words is "two trillion, fifty-six billion, one million, one hundred seventy-one thousand, six hundred twenty-one".